linux-kernel - Re: [RFC][v8][PATCH 0/10] Implement clone3() system call

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Date:	Tue, 13 Oct 2009 21:38:58 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
CC:	Roland McGrath <roland@...hat.com>, linux-kernel@...r.kernel.org,
	Oren Laadan <orenl@...columbia.edu>, serue@...ibm.com,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Pavel Emelyanov <xemul@...nvz.org>,
	Andrew Morton <akpm@...l.org>, torvalds@...ux-foundation.org,
	mikew@...gle.com, mingo@...e.hu,
	Nathan Lynch <nathanl@...tin.ibm.com>, arnd@...db.de,
	peterz@...radead.org, Louis.Rilling@...labs.com,
	kosaki.motohiro@...fujitsu.com, randy.dunlap@...cle.com,
	linux-api@...r.kernel.org,
	Containers <containers@...ts.linux-foundation.org>,
	sukadev@...ibm.com
Subject: Re: [RFC][v8][PATCH 0/10] Implement clone3() system call

On 10/13/2009 09:36 PM, Sukadev Bhattiprolu wrote:
> 
> Would it help to use a type clone_flags_64_t to make the distinction
> between types more explicit ?
> 

The problem with using the same flags in two places, one as a 32-bit and
one as a 64-bit number, is that using one in the wrong place will cause
silent, but deadly, truncation.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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